- Free UK Delivery on all orders over £40
- Same day despatch with DPD if ordered by 3pm
- Spend & Save with our Loyalty Scheme
- Independently Lab Tested for purity
- Free UK Delivery on
all orders over £40 - Same day despatch with
DPD if ordered by 3pm - Spend & Save with our
Loyalty Scheme - Independently Lab Tested
for purity
How Long Does CBD Oil Take To Work?
The rate at which CBD is absorbed by the body, and therefore delivers its potential effectiveness, is called bio-availability.
The most efficient way of absorbing CBD is through a vapour. The CBD vaping liquid is heated in a vaping device (much like water in a kettle) and the vapour is then inhaled. The large surface area of the lungs means it can enter the bloodstream very quickly, particularly useful when the need is acute.
The second most effective way of absorbing CBD is through oral drops. Drops are placed under the tongue for one to two minutes and then swallowed. The capillaries under the tongue allow for the CBD to go directly into the bloodstream and avoid the slow process of digestion.
CBD can also be absorbed through the skin, if the CBD oil is included in creams and lotions that are applied topically, or alternatively directly ingested when the active ingredient is included in food supplements.
We test all our products to ensure their potency, so you can be confident of the dosage you are buying and ingesting.

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Green Stem CBD
Promoting Wellness and a healthy lifestyle
At Green Stem CBD we truly believe in the therapeutic effects of CBD. It led us to seek out only the purest CBD ingredients, from the CBD distillate used in our CBD Oil, to the 98%+ pure CBD isolate used in our vaping liquids.
It is our mission to educate and engage with our customers and the CBD community of the natural healing properties of this amazing active ingredient.
Our collection encompasses a wide range of products, with many more currently in development. We offer high quality CBD vape e-liquids, luxurious CBD infused lip balms, sumptuous CBD bath bombs, and great tasting CBD Oils (oral drops). Our experience in flavour creation and liquid formulation is what differentiates our products from other brands.
Our products are proudly created right here in the UK and every batch is tested for quality and potency. You can read more about our ingredients on our Quality page.
At our launch at the UK’s first Hemp and CBD Expo in March 2019, we were honoured to win 5 out of 7 awards entered, including: 1st Place for “Best CBD Oil” 1st Place for “Best Inhalable” (CBD E-Liquid), 1st Place for “Best Cosmetic” together with 1st Place for Best Packaging and Best (Exhibition) Stand.